I disagree. That entire episode was a character study of Ghost. Every Ghost scene was really a bunch of random clips, most were unrelated to anything except Ghost, they didn't push the story forward, only Ghost. So by that, if you look at it together, you're getting to understand the character. From a story standpoint, I get it, but this is also episode 4, and you know there's more to come...perhaps to be revisited later. You already know that he has to reconcile with Power & Rae, so perhaps it requires a little patience. I definitely wouldn't call it sloppy writing, because everything does not to be explained at that time...and some things don't need to be explained at all. Now, will some be upset, sure, BUT you can go through damn near any movie, or show, and have tons of scenes that are nothing more than showing traits of the character in different settings.
As for Greg, he did that plenty of times with Gargoyles. There's so much he did without a "why," most that he returned to much later on.